HEADSETS FOR USE WITH ALL OF THE FOLLOWING-- TELEPHONES, CELLULAR TELEPHONES, PERSONAL DIGITAL ASSISTANTS, TWO-WAY RADIOS, COMPUTERS, GAMING MACHINES, COMPACT DISC PLAYERS, CASSETTE TAPE PLAYERS, DVD PLAYERS, STEREO RECEIVERS, TELEVISIONS

sonar fish finders and sonar depth finders, for detecting the depth of water or the depth or location of fish and other objects in the water